Summary:
- A coronary angiography is a minimally invasive procedure that is performed to confirm the presence of coronary artery disease.
- It may be recommended if you have symptoms like chest pain, breathlessness, palpitations, dizziness and unexplained fatigue, or if non-invasive tests reveal significant blockages in the coronary arteries.
- Depending on the findings of the coronary angiography, your cardiologist will then decide on further management – medical therapy alone, coronary angioplasty, or coronary artery bypass graft surgery.
Depending on the patient’s symptoms, and findings of an electrocardiogram (ECG), stress test, or other heart tests, your cardiologist may recommend a closer look at the arteries supplying your heart.
A coronary angiography is often the next step when there are concerns about reduced blood flow to the heart or possible coronary artery disease. The findings can help confirm a diagnosis and determine what further treatment is required.
What Is a Coronary Angiography?
A coronary angiography is a minimally invasive diagnostic procedure whereby a cardiologist inserts a small tube through either the wrist or the groin up to the heart, then injects contrast into the heart arteries and takes X-rays to visualise the vessels and detect any blockage.
Rather than relying on indirect signs from other tests, the procedure allows your cardiologist to obtain a direct and detailed view of the coronary arteries, helping them better understand what is happening inside your heart.
What Heart Conditions Does It Help Detect?
A coronary angiography can help cardiologists identify:
- Coronary artery disease (CAD): Narrowing or blockage of the coronary arteries caused by the build-up of fatty deposits (cholesterol plaque).
- Significant coronary artery blockages: Areas where blood flow to the heart muscle may be substantially reduced.
- Multi-vessel coronary artery disease: Narrowing or blockages affecting more than one coronary artery.
- Coronary artery abnormalities: Structural abnormalities affecting the coronary arteries, which may be present from birth or develop later in life.
Significant blockage noted at the ostium of the left anterior descending artery on coronary angiography.
Based on these findings, your cardiologist can determine whether medication, angioplasty, or surgery may be appropriate.
How Do Doctors Decide Who Should Get a Coronary Angiography?
The decision to proceed with a coronary angiography is made after your cardiologist reviews your symptoms alongside the results of initial investigations.Your doctor may then require additional investigations before determining whether a coronary angiography is necessary.
ECG, Stress Test, and Imaging Results
Your cardiologist will usually begin with non-invasive tests such as an electrocardiogram (ECG), echocardiogram, or treadmill stress test. Sometimes, a CT coronary angiogram may be performed.
If these tests suggest reduced blood flow to the heart or produce unclear results, they may recommend an angiography to clarify the findings and guide treatment planning.
When Abnormal Findings Require Further Investigation
If earlier tests raise concern but do not provide a complete explanation, a coronary angiography may be used to obtain a clearer and more definitive assessment.
This is particularly important when your cardiologist needs to confirm the extent of any narrowing or blockage before deciding on the most appropriate management approach.
Assessing Overall Heart Disease Risk
Your cardiologist will also take your overall cardiovascular risk into account when deciding whether an angiography is appropriate. This includes:
- Age
- Blood pressure
- Cholesterol levels
- Diabetes
- Smoking history
- Family history of heart disease
What Symptoms May Lead To a Coronary Angiography?
Symptoms often play a key role in determining whether a coronary angiography is needed. These symptoms usually occur when the heart is not receiving enough oxygen-rich blood.
Chest Pain or Pressure During Activity
Chest discomfort, tightness, or pressure that occurs during physical activity or emotional stress is a common warning sign of reduced blood flow to the heart.
Shortness of Breath or Reduced Exercise Tolerance
If you find yourself becoming breathless more easily than before or struggling with activities you previously managed well, this may indicate underlying heart disease.
Palpitations, Dizziness, or Unexplained Fatigue
Irregular heartbeats, lightheadedness, or persistent fatigue may also suggest that your heart is not functioning optimally and may require further investigation.
If you are experiencing any of the symptoms above, it is important to seek medical evaluation early. Book an appointment at Novena Heart Centre to get peace of mind.
What To Expect During a Coronary Angiography?
A coronary angiography is performed in a hospital setting under strict medical supervision. Here’s a general guide on the process.
Preparation Before The Procedure
Before an angiography, you may be asked to fast for several hours. Your doctor will also review your medications and medical history, and you may be advised to pause certain medications.
During The Angiography
Once you are prepared for the procedure, your cardiologist will begin the angiography in a controlled clinical setting. You will be awake during the procedure, but the insertion site will be numbed using a local anaesthetic to reduce discomfort.
Sheath inserted into artery to facilitate passage of angiography catheters
Here’s what you can generally expect during the procedure:
- A small incision is made at the wrist or groin so a thin, flexible tube (catheter) can be inserted into a blood vessel.
- The catheter is gently guided through your blood vessels towards the heart using X-ray imaging for accurate navigation.
- Once in position, contrast dye is injected through the catheter into the coronary arteries.
- X-ray images are taken in real time as the dye flows through the arteries, allowing your cardiologist to assess blood flow and identify any narrowing or blockage.
- Depending on the findings of the coronary angiography, your cardiologist will then decide on further management – medical therapy alone, coronary angioplasty, or coronary artery bypass graft surgery.
Recovery And Observation After The Test
After the catheter is removed, you will be observed for several hours to ensure there are no immediate complications. Most patients can return home the same day or the following day, depending on their condition and the findings.
Safety And Monitoring During The Procedure
Throughout the test, your heart rate, blood pressure, and oxygen levels are continuously monitored. The procedure is carried out in a controlled environment to ensure safety at every step.
Schedule a Cardiac Evaluation In Singapore
A coronary angiography can play an important role in protecting your long-term heart health by steering you towards timely treatment.
At Novena Heart Centre, we provide comprehensive cardiac assessments, where our experienced cardiologists will review your symptoms, perform necessary tests, and advise whether a coronary angiography is relevant for your condition.
Contact us today to book an appointment.
FAQs on Coronary Angiography
Can an angiography detect blocked arteries accurately?
Yes, it is considered one of the most accurate tests for directly visualising blockages in the coronary arteries.
How long will a coronary angiography take?
The procedure usually takes less than 30 minutes, although preparation and recovery may extend your visit.
What happens if a blockage is found?
Your cardiologist may recommend medication, coronary angioplasty, or coronary artery bypass graft surgery depending on the severity and location of the blockage.
Does all chest pain require a coronary angiography?
No, not all chest pain requires an angiography. The decision depends on your symptoms and initial test results.
How should I prepare for a coronary angiography?
You may be asked to fast, avoid certain medications, and arrange for someone to accompany you home after the procedure.
